Electric water-heater.



0L 0. HASKELL. ELECTRIC WATER HEATER.

' APPLICATION FILED 0GT.31,1608- v 1,045,975. Patented Dec. 3

water is passed throu h a circuitous passage 'over'and around the eectric heating element v U IT D srATias- PATEN OFFlCE.

sraaus n, or cnrcaeo, ILLINOIS.

am crnic warns-names;

- Specification of LGttQISIatBIR.

Patented Dec. 3,1912.

Application filed 0ctob er81;19 08. sena1iw .'4eo,4ao.

To all .whom a my camera- Be it known that Q. HASKELZ,

. a citizen of the United States,'residingat Los Angeles, in the countyof Los Angeles and State of California, have invented new andusefullmprovements in Electric Water- Heaters,; of which the followingis a specific atiom v This 'invention relates. to an improved formofelectric water heater in which the and in which'the latent heat of any,steam generated is utilized for further heating the water. 4 r

The construction comprises a double shell case, the water beingcompelled to circulate between the shells in athin layer andthen in anopposite direction through the .inner shell where the electric heatingelement is disposed. At the dipper end of the inner shell aseparatingfdrum is arranged from which the heated water is drawn andalso f1'om wl1ich the generated steam escapes back into the cold waterentering the heater By allowing the steam to come into immediate contactwith the cold water, its'latent heat is utilized to heat that waterand asaving is thus effected even with a very small amount of generatedsteam. L

In the accompanyin drawings, forming a part of thisspecificat1on-Figure-1, is'a longitudinal vertical section of theheater.

Fig. 2, is asection taken on line 22 of I n the drawings 5 designatesthe outer' shell of the case, which is preferably cylindrical in formand provided at its upper end with a water inlet 6 which maybe connectedto any suitable supply. Near the upper end of the shell, and preferablyformed integrally therewith, is a perforated diaphragm 7 throughwhichthe water must pass to reach the lower part of the shell and is therebybroken into a fine spray. In thlS form the water falls upon the upperclosed end of inner shell 8, also prefera ly cylindrical, andconcentrically arranged within shell 5 so as to leave an annular space 9between the two shells. The water passes downwardly through annularspace 9 to the bottom of shell 5 where it enters the inner shell throughapertures 10 in its lowerend.

' drawn ofi'. through a discharge pipe 12 to any convenient point. I

blituatedwithin' innerjshell 8 is an electric heating element 13, formedupon 'a member 14 of insulating material of the configuration shown inFig. 2.- Theedges of member 14 'are.provide'd with slots 15 throughwhich resistance wire I6 is passed in its s iralwinding around --member14. Theen slot the'resistance wire are connected to binding po sts 17-which are in turn connected by wires 18 to binding posts 19 whichproject through shell 5 and'to which the current 4 feed wire may beconnected on the outside of the case; A cap 20 closes the lower end ofshell 5 and inner shell 8 rests at its lower end on this cap.

when in operation, the water level is main tamed at about the pointshown in the drawings. The supply of water from "inlet 6" keepsthe levelon' the outside of inner shell- 8 slightly higher than that inside andthere is a consequent flow downwardly between the shells and'upwardlywithin shell 8 and around the electric heating element. On its passagedownwardly between the shells the water is somewhat heated as the whole"heater, and especially the inner shell, is kept hot by the action oftheheating element. .Qn its passage upwardly within shell 8 the water isfurther heated, the final temperature dependin on the speed at which thewater passes t rough the heater. In raising the water. to a hightemperature it is impossible to avoid the generation of some steam andin the usual heater the latent heat required for the generation of thissteam is lost-so far as, the heating of water is concerned. Within drum11 the steam is given an opportunity to separate from the water and aseries of apertures 21 at the upper end 'of the drum and above the waterlineoutside of; shel1 8 afi'ord means for the escape of this steam intothe spray delivered from diaphragm 7.. The intimate contact of thissteam with the spray immediately condenses the steam and heats the waterin the spra thus adding. greatly to the chiciency'o the device. Thelacement of apertures 21 above the water ine prevents the entrance ofwater to the drum and the discharge pipe without passing'over theheating element.-

The water passes upwardly throu h shell 8 into .drum 11 at its upper endw enoe it. is

One of the main sources of danger in elec- Water is admitted to the"heater so that,

charge pipe is enlarged in its vertical coming water in a finely dividedstate to the upper end of the outer shell, the upper end of the innershell being arranged for the discharge 0t water and steam.

3. Anelectric water heater, comprising two concentrically spaced shells,the inner all stand as high the connection point of discharge pipe'lQ, 5

the discharge pipe being made so as to prevent its siphoning any waterlrom heater. its illustrated in Fig. 1 the distion as at 22 so that theamount of water por- ; end, an electric heating the i i which passesthrough the small portion 1 of the discharge plpe cannot completely lillj the large pgrtion. prevents any siphoning action.

This provision effectually shell being From the foregoing itwill be seenthat 5 the above described in its action on account of its allowing aheated surface lizin :inv steam which ma be generated.

a u u Heaters of this c ass are usually so arranged is generated j thatas little steam as possible but it is obvious that it the proportionsare heater is highly ellirient shell being open at its lower end andprovided with steam escape ports at its upper element within the innershell, means to introduce water to the upper end of the outer shell, andmeans to discharge water from the upper endof the inner shell.

at. An'electric water heater comprising a plurality of spaced shells, anelectric heating element within the inner shell, the inner arranged toallow steam formed therein to escape into the outer shell, and means tocirculate water successively through V I the spaces between the shells.protracted contact of the water with the and also on accountof uti 5. Anelectric water heater, comprising two (concentrically spaced shells, thelower end of the inner shell being open and its arranged to heat a largeamount of water when a small amount of water is passed through theheater a great deal of steam will be generate-l. In view of thisdiiliculty the utilization of the most ellicient for heating the water.

latent heat of the steam is tating the Having described my invention,what I- claim as new Patent is:-

1. An electric water heater, comprising an outer and an inner shell, theinner shell being partially closed at the top to delicrt the water andopen at the bottom, inlet means for water at the top of the outer shell,and

an electric heating element within the inner shell.

An electric heater, comprising an outer andan inner shell, the innershell being bottom, an

closed at the top and open at the electric heating element arrangedwithin the inner shell, and means to spread the inand desire to secureby Letters upper end provided with steam escape ports, an electricheating element within-the inner shell, means to gint-roduce water in aline spray to the upper end of the outer shell, and means to dischargethe water from the upper end of the inner shell.

6. An electric water heater having a water jacket, said jacket havingmeans for faciliintroduction of water to said heater through said-watcrjacket, and an electric heating element surrounded by said water jacketand adapted to receive water therefrom, means being arranged above saidheating element for directing steam formed by said heating element intocontact with the water entering said water heater.

in witness that I claim the foregoing l have hereunto subscribed nrvname this 20th day of October, 1908.

CHARLES o. HASKELL. Witnesses Eoirnnn A. STRAUSE, OLmn PALMER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

